CN209093106U - Dry denitration system - Google Patents

Abstract

This application involves Dry denitration technical fields, and more particularly, to a kind of Dry denitration system, Dry denitration system includes: to wind devices, material wind mixing apparatus and storage equipment；Expect that wind mixing apparatus includes being sequentially connected logical double-screw feeder, air amplifying device and conveyance conduit；Storage equipment is for storing and providing material to double-screw feeder；The feed pipe of air amplifying device extends along vertical direction；Feed pipe, which offers, gives wind gap；The input end of feed pipe is connected with double-screw feeder, and the input end of feed pipe is used to for the material that double-screw feeder exports being delivered to the inside of feed pipe along vertical direction；The outlet end of feed pipe is connected with conveyance conduit, and for exporting the material wind mixture in feed pipe to conveyance conduit along vertical direction, conveyance conduit is connected to burner hearth for the outlet end of feed pipe.As it can be seen that the present apparatus realizes the uniform mixing and quickly conveying of material wind mixture, material sedimentation is avoided, denitration effect is improved.

Description

Dry denitration system

Technical field

This application involves Dry denitration technical fields, more particularly, to a kind of Dry denitration system.

Background technique

Currently, being mostly blanking along vertical direction (urea), horizontal blast, water when material wind mixes in Dry denitration technique Square to wind be mingled with material and go out along horizontal feed, and by pipeline to boiler, urea and horizontal gas flow are only It is quick of short duration contact, the form of bellows chamber material can not be formed, so that material is easy deposition, and then leads to not to form uniform material wind Mixture, denitration effect is poor, in addition, storage compartment is not present in existing Dry denitration system, the materials such as urea are arbitrarily at random to be put It sets, pollutes environment.

Utility model content

The application's is designed to provide a kind of Dry denitration system and technique, to solve dry method existing in the prior art In denitrating technique material wind, the mixture of bellows chamber material form can not be formed, urea is easy deposition, and then causes to expect that wind mixture is uneven Even, denitration effect is poor, in addition, the technical issues of storage compartment is not present in existing Dry denitration system.

This application provides a kind of Dry denitration systems, comprising: to wind devices, material wind mixing apparatus and storage equipment； Wherein, the material wind mixing apparatus includes being sequentially connected logical double-screw feeder, air amplifying device and conveyance conduit；Institute Storage equipment is stated for providing material to the double-screw feeder；The air amplifying device includes shell and feed pipe； The feed pipe extends along vertical direction；The shell is located at the outside of the feed pipe, and the shell be provided with into Air port, the air inlet are connected with described to wind devices；The feed pipe, which offers, gives wind gap, and described to wind gap It is described to be used to convey air into the feed pipe to wind gap in the shell；The input end of the feed pipe with it is described Double-screw feeder is connected, and the material that the input end of the feed pipe is used to export the double-screw feeder is along vertical Direction is delivered to the inside of the feed pipe；The outlet end of the feed pipe is connected with the conveyance conduit, the feed pipe Outlet end for being exported the material wind mixture in the feed pipe to the conveyance conduit along vertical direction；It is described defeated Send pipeline for being connected to burner hearth.

In the above-mentioned technical solutions, further, described to give wind gap for along the inclination for forming acute angle with vertical direction Tuyere structure, and described be used to the feed pipe give wind diagonally downward to wind gap.

In any of the above-described technical solution, further, the conveyance conduit includes bending segment pipe and straightway pipe Road；The bending segment pipe and the straight line segment pipe are sequentially connected logical；One end of the bending segment pipe and the air Amplifying device is connected, and the bending segment pipe is arcuate structure, and the straight line segment pipe is far from the bending segment pipe One end is connected with the burner hearth by pipeline.

In any of the above-described technical solution, further, pass through blower between the storage equipment and the material wind process It is connected with the burner hearth.

In any of the above-described technical solution, further, the blower includes the first blower and the second blower；Wherein, institute It states on the first blower is arranged between the storing, and first blower is connected with the inside between the storing；Described second On blower is arranged between the material wind process, and it is connected between second blower and the material wind process.

In any of the above-described technical solution, further, the Dry denitration system further includes detection device and control Equipment；Wherein, the detection device, the control equipment and the material wind mixing apparatus are sequentially connected and connect, and the detection is set It is standby to be also connected with the burner hearth.

In any of the above-described technical solution, further, the material wind mixing apparatus further includes between expecting wind process and pacifying Loading board；Wherein, the mounting plate setting is in the material wind process, and the mounting plate is provided with mounting hole；Double spiral shells Revolve feeder setting in the mounting hole.

In any of the above-described technical solution, further, the storage equipment includes between storing, drier and bracket； Wherein, the drier and the bracket are arranged in the storing, and the drier is arranged between the storing Inner sidewall on, the bracket is arranged on the bottom face between the storing.

In any of the above-described technical solution, further, it is described to wind devices include between wind, exhaust fan and filtering Net；Wherein, the exhaust fan setting is given in wind described, and the air inlet phase of the air outlet of the exhaust fan and the shell Connection；It is described to ventilation opening is offered between wind, the filter screen is removably disposed in the ventilation opening.

In any of the above-described technical solution, further, material wind mixing apparatus further include material wind process between and mounting plate； Wherein, mounting plate setting is in material wind process, and mounting plate is provided with mounting hole；Double-screw feeder is arranged in mounting hole It is interior.

Present invention also provides a kind of Dry denitration techniques, comprising the following steps:

Step 100. is along direction from the top down through the double-screw feeder to the feed of the air amplifying device Pipe transport urea, it is described to convey air, the urea and the air to the feed pipe of the air amplifying device to wind devices It is mixed to form the mixture of bellows chamber material form in the feed pipe, and moves downwardly to the conveyance conduit；

Mixture described in step 200. forms uniform material wind mixture in the conveyance conduit, then the material wind is mixed Close object be delivered in the burner hearth, the material wind mixture in the burner hearth nitride and sulfide react, progress denitration Processing.

Compared with prior art, the application has the beneficial effect that

Dry denitration system provided by the present application, double-screw feeder are used to convey material to feed pipe, and material is along perpendicular Histogram enters in feed pipe to from input end, while conveying swiftly flowing air, high speed to the air inlet of shell to wind devices Air-flow is accumulated in shell, and then high-speed flow, by the inside to wind gap inflow feed pipe, high-speed flow is adsorbed onto side On wall, high-speed flow leads to the generation of center area of low pressure during flowing through side wall, and material is in negative pressure and self gravity It under effect, moves down, and is sufficiently mixed in feed pipe with high-speed flow, form the form of wind wrapper, facilitate high speed Air-flow drives material high-speed mobile, and material will not settle, and material will not be bonded on the tube wall of feed pipe, bellows chamber material accelerate to Lower movement, finally exports out of discharge port along vertical direction, is delivered in boiler using conveyance conduit, and the shape in pipeline At uniform material wind mixture, it is uniform for guaranteeing to spray into boiler, since the concentration of material wind mixture is higher, transfer efficiency Height, denitration effect are more preferable.In addition, storage equipment is for storing material, and can will be in storage equipment by artificial or machine Material is transported at double-screw feeder, and then provides material to double-screw feeder.

Specifically, the course of work of this Dry denitration system is that artificial or machine conveys the material in storage equipment Into double-screw feeder, material is conveyed to the feed pipe of air amplifying device, at the same time, air by double-screw feeder again The air inlet of the shell of amplifying device blasts high-speed flow, and high-speed flow to wind gap by entering in feed pipe, high speed Air-flow is adsorbed on side wall, and high-speed flow leads to the generation of center area of low pressure during flowing through side wall, material negative pressure with And under the action of self gravity, move down, and be sufficiently mixed in feed pipe with high-speed flow, forms the shape of wind wrapper Formula, bellows chamber material sharp downward movement again, and it is delivered to boiler by conveyance conduit, and uniform material wind mixing is formed in pipeline Object finally carries out denitration process being injected into boiler.

As it can be seen that this Dry denitration system has to wind devices, expects that wind mixing apparatus and storage equipment, storage equipment can Material is supplied to the feed pipe of the air amplifying device of material wind mixing apparatus, high speed gas can be provided to feed pipe to wind devices Stream, since the inside of venturi principle feed pipe generates negative pressuren zone, under material is quick under the action of negative pressure and self gravity It drops into feed pipe, and is mixed with high-speed flow, form the mixture of bellows chamber material form, material will not generate sedimentation, bellows chamber material The mixture of form is along outputting material straight down, with running inside pipeline, will form uniform material wind mixture, sprays into It is uniformly, to improve denitration efficiency when boiler.

Dry denitration technique provided by the present application, including Dry denitration system described above, material is along vertical direction It is transported in feed pipe, is sufficiently mixed with swiftly flowing air, form the mixture of bellows chamber material form, it is heavy that material will not generate Drop, the mixture of bellows chamber material form, with running inside pipeline, it is mixed to will form uniform material wind along outputting material straight down Object is closed, is uniformly, to improve denitration efficiency when spraying into boiler.

Detailed description of the invention

It, below will be to specific in order to illustrate more clearly of the application specific embodiment or technical solution in the prior art Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below Attached drawing is some embodiments of the application, for those of ordinary skill in the art, before not making the creative labor It puts, is also possible to obtain other drawings based on these drawings.

Fig. 1 is the structural schematic diagram of Dry denitration system provided by the embodiments of the present application；

Fig. 2 is the another structural schematic diagram of Dry denitration system provided by the embodiments of the present application；

Fig. 3 is the structural schematic diagram that wind mixing apparatus is expected in part provided by the embodiments of the present application；

Fig. 4 is the structural schematic diagram provided by the embodiments of the present application to wind devices；

Fig. 5 is the flow chart of Dry denitration technique provided by the embodiments of the present application.

Appended drawing reference:

1- is to wind devices, and 11- is between wind, 12- exhaust fan, 13- filter screen, and 2- expects wind mixing apparatus, 21- double helix feeding Machine, 22- air amplifying device, 221- shell, 2211- air inlet, 222- feed pipe, 2221- upper feed pipe are fed under 2222- Pipe, 2223- give wind gap, 23- conveyance conduit, and 231- is bent segment pipe, 232- straight line segment pipe, 3- storage equipment, 4- detection Equipment, 5- control equipment, 6- blower, the first blower of 61-, the second blower of 62-, 7- burner hearth.

Specific embodiment

It is clearly and completely described below in conjunction with technical solution of the attached drawing to the application, it is clear that described implementation Example is some embodiments of the present application, instead of all the embodiments.

The component of the embodiment of the present application for usually describing and showing in attached drawing here can be with a variety of different configurations To arrange and design.Therefore, the detailed description of the embodiments herein provided in the accompanying drawings is not intended to limit below and is wanted The scope of the present application of protection is sought, but is merely representative of the selected embodiment of the application.

Based on the embodiment in the application, those of ordinary skill in the art are obtained without making creative work The every other embodiment obtained, shall fall in the protection scope of this application.

In the description of the present application, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical", The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to Convenient for describe the application and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, It is constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.In addition, term " first ", " second ", " third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.

In the description of the present application, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition Concrete meaning in application.

Dry denitration system and technique according to the application some embodiments are described referring to Fig. 1 to Fig. 4.

Referring to shown in Fig. 1 to Fig. 3, embodiments herein provides a kind of Dry denitration system, comprising: to wind devices 1, Expect wind mixing apparatus 2 and storage equipment 3；Wherein, material wind mixing apparatus 2 include be sequentially connected logical double-screw feeder 21, Air amplifying device 22 and conveyance conduit 23；Storage equipment 3 is for storing and providing material to double-screw feeder 21；Air Amplifying device 22 includes shell 221 and feed pipe 222；Feed pipe 222 extends along vertical direction；Shell 221 be located to The outside of expects pipe 222, and shell 221 is provided with air inlet 2211, air inlet 2211 is connected with to wind devices 1；Feed pipe 222 It offers to wind gap 2223, and is located in shell 221 to wind gap 2223, to 11 gaps between wind for defeated into feed pipe 222 Send air；The input end of feed pipe 222 is connected with double-screw feeder 21, and the input end of feed pipe 222 is used for double helix The material that feeder 21 exports is delivered to the inside of feed pipe 222 along vertical direction；The outlet end of feed pipe 222 and delivery pipe Road 23 is connected, and the outlet end of feed pipe 222 is for exporting the material wind mixture in feed pipe 222 along vertical direction to defeated It send in pipeline 23；Conveyance conduit 23 is for being connected to burner hearth 7.

Dry denitration system provided by the present application, double-screw feeder 21 are used to convey material, material to feed pipe 222 Enter in feed pipe 222 from input end along vertical direction, while conveying height to the air inlet 2211 of shell 221 to wind devices 1 The air of speed flowing, high-speed flow is accumulated in shell 221, and then high-speed flow is by entering feed pipe to 11 clearance flows between wind 222 inside, high-speed flow are adsorbed on side wall, and high-speed flow leads to the production of center area of low pressure during flowing through side wall Raw, material moves down under the action of negative pressure and self gravity, and is sufficiently mixed in feed pipe 222 with high-speed flow, The form for forming wind wrapper facilitates high-speed flow and drives material high-speed mobile, and material will not settle, and material will not bond On the tube wall of feed pipe 222, the acceleration of bellows chamber material is moved downward, and is finally exported out of discharge port along vertical direction, using Conveyance conduit 23 is delivered in boiler, and uniform material wind mixture is formed in pipeline, and it is uniform for guaranteeing to spray into boiler, Since the concentration of material wind mixture is higher, transfer efficiency is high, and denitration effect is more preferable.In addition, storage equipment 3 is used to store material, And the material in storage equipment 3 can be transported at double-screw feeder 21 by artificial or machine, and then fed to double helix Material machine 21 provides material.

Specifically, the course of work of this Dry denitration system is that artificial or machine conveys the material in storage equipment 3 Into double-screw feeder 21, material is conveyed to the feed pipe 222 of air amplifying device 22 by double-screw feeder 21 again, with this Meanwhile high-speed flow is blasted at the air inlet 2211 of the shell 221 of air amplifying device 22, high-speed flow is by giving wind gap 2223 enter in feed pipe 222, and high-speed flow is adsorbed on side wall, and high-speed flow causes center low during flowing through side wall The generation of intermediate pressure section, material move down under the action of negative pressure and self gravity, and in feed pipe 222 with high speed gas Stream is sufficiently mixed, and forms the form of wind wrapper, bellows chamber material sharp downward movement again, and be delivered to pot by conveyance conduit 23 Furnace, and uniform material wind mixture is formed in pipeline finally carries out denitration process being injected into boiler.

As it can be seen that this Dry denitration system has to wind devices 1, material wind mixing apparatus 2 and storage equipment 3, storage equipment 3 Material can be supplied to the feed pipe 222 of the air amplifying device 22 of material wind mixing apparatus 2, it can be to feed pipe to wind devices 1 222 provide high-speed flow, and since the inside of venturi principle feed pipe 222 generates negative pressuren zone, material is in negative pressure and itself weight It is hurtled down under the action of power into feed pipe 222, and mixed with high-speed flow, forms the mixture of bellows chamber material form, material Sedimentation will not be generated, the mixture of bellows chamber material form will form along outputting material straight down with running inside pipeline Even material wind mixture is uniformly, to improve denitration efficiency when spraying into boiler.

Wherein, optionally, double-spiral feeder, air amplifier and conveyance conduit 23 along vertical direction, and from upper It is sequentially connected downwards logical, but is not limited only to this.

Wherein, optionally, feed pipe 222 is connected with shell 221, and the two can be connected by welding and connect, but be not limited only to This.

Wherein, optionally, air inlet 2211 and it is connected with the inside of shell 221 to wind gap 2223.

Wherein, optionally, material is urea, but is not limited only to this.

In one embodiment of the application, it is preferable that as shown in Figure 1, to wind gap 2223 be along with vertical direction The inclination tuyere structure of acute angle is formed, and is used for feed pipe 222 to wind gap 2223 diagonally downward to wind.

In this embodiment, be arranged to wind gap 2223 it is skewed, and to wind gap 2223 can be to feed pipe 222 High-speed flow is conveyed diagonally downward, and the side wall that high-speed flow is capable of the person's of patch feed pipe 222 flows downward, so that feed pipe 222 Middle part form negative pressuren zone so that material fast automatic whereabouts under the action of negative pressure, the material of whereabouts are mixed with high-speed flow, The form for forming wind wrapper facilitates high-speed flow and drives material high-speed mobile, and material will not settle, and material will not bond On the tube wall of feed pipe 222, bellows chamber material sharp downward movement again.

In one embodiment of the application, it is preferable that as shown in figure 3, feed pipe 222 includes upper 2221 He of feed pipe Lower feed pipe 2222；Wherein, upper feed pipe 2221 is plugged in lower feed pipe 2222 far from one end of double-spiral feeder, and on It is formed between feed pipe 2221 and lower feed pipe 2222 to wind gap 2223；Upper feed pipe 2221 along being in gradually-reducing shape straight down Setting, lower feed pipe 2222 along being in that flaring shape is arranged straight up, so that being obliquely installed to wind gap 2223；Lower feed pipe 2222 are connected with conveyance conduit 23.

In this embodiment, upper feed pipe 2221 is plugged in lower feed pipe 2222 far from one end of double-spiral feeder, Wherein, upper feed pipe 2221 is along being in gradually-reducing shape setting straight down, and lower feed pipe 2222 along being in that flaring shape is set straight up It sets, so that being obliquely installed to wind gap 2223, thus is convenient for the air-flow by conveying high speed diagonally downward to wind gap 2223, into And the inside of feed pipe 222 is made to form negative pressure region, so that material moves downwardly to feed pipe under the action of negative pressure automatically It in 222, and is sufficiently mixed with high-speed flow, forms the form of bellows chamber material, facilitated high-speed flow and drive material high-speed mobile, object Material will not settle, and material will not be bonded on the tube wall of feed pipe 222.

Wherein, optionally, the other end of upper feed pipe 2221 passes through the outside that shell 221 is located at shell 221, certainly, no It is only limitted to this.

In one embodiment of the application, it is preferable that as shown in figure 3, conveyance conduit 23 includes bending segment pipe 231 And straight line segment pipe 232；Bending segment pipe 231 and straight line segment pipe 232 are sequentially connected logical；It is bent the one of segment pipe 231 End is connected with air amplifying device 22, and being bent segment pipe 231 is arcuate structure, and straight line segment pipe 232 is far from bending section pipe The one end in road 231 is connected with burner hearth 7 by pipeline.

In this embodiment, bending segment pipe 231 is sequentially connected logical with straight line segment pipe 232, is bent segment pipe 231 and is given The outlet end of expects pipe 222 is connected, and bending segment pipe 231, which plays, smoothly send wind action, avoids angular generation, avoids Material wind mixture accumulation is blocked in sharp corner, guarantees the efficiency and concentration of material wind mixture conveying, to guarantee denitration effect.

Wherein, optionally, bending segment pipe 231 is arcuate structure, and the structure of wedge angle is not present in its own, mixed convenient for material wind Close the smooth export of object.

Wherein, optionally, bending segment pipe 231 is smoothly connected with straight line segment pipe 232, and wedge angle is not present.

Wherein, optionally, bending segment pipe 231 is an integral structure with straight line segment pipe 232, certainly, is not limited only to this.

In one embodiment of the application, it is preferable that as depicted in figs. 1 and 2, between storage equipment 3 and material wind process It is connected by blower 6 with burner hearth 7.

In this embodiment, blower 6 can siphon away storage equipment 3 and expect the ammonia in wind process, and ammonia is defeated Burner hearth 7 has been given, has prevented ammonia from escaping and pollutes environment into air.

Wherein, optionally, the quantity of blower 6 be 1 or 2, when the quantity of blower 6 be 1 when, expect wind process between with And discharging equipment shares 1；When the quantity of blower 6 is 2, between material wind process and discharging equipment is respectively equipped with 1 blower 6.

In one embodiment of the application, it is preferable that as shown in Fig. 2, blower 6 includes the first blower 61 and the second blower 62；Wherein, on the first blower 61 is arranged between storing, and the first blower 61 is connected with the inside between storing；Second blower 62 On being arranged between expecting wind process, and it is connected between the second blower 62 and material wind process.

In this embodiment, the first blower 61 and the second blower 62 work independently, and will not interact, can be according to reality It is turned on or off, work safety, reliability are higher.

In one embodiment of the application, it is preferable that as depicted in figs. 1 and 2, Dry denitration system further includes that detection is set For 4 and control equipment 5；Wherein, detection device 4, control equipment 5 and material wind mixing apparatus 2 are sequentially connected and connect, detection device 4 are also connected with burner hearth 7.

In this embodiment, optionally, control equipment 5 is also connected with twin-screw batcher and to wind devices 1, detects Equipment 4 is used to detect the discharge amount of nitrogen oxides, sulfide in burner hearth 7 etc., and the data transfer that will test gives control equipment 5, control equipment 5 is vertical according to detection, adjusts the revolution of double-spiral feeder and then controls discharge quantity, and to wind devices 1 Power, i.e., adjustment is to air quantity etc..Wherein, optionally, the model of detection device 5 is CEMS1000 and flue gas emission is cooperated to monitor Software V1.0；Control equipment 5 is the controller that model is BKTX01.

In one embodiment of the application, it is preferable that material wind mixing apparatus 2 further includes between expecting wind process and installing Plate；Wherein, mounting plate setting is in material wind process, and mounting plate is provided with mounting hole；The setting of double-screw feeder 21 is being pacified It fills in hole.(not shown)

In this embodiment, expect to can reduce the noise generated when material wind mixes between wind process, and can between material wind process Leaking for ammonia in the course of work is prevented, it is safer and more reliable.Wherein, mounting plate is that double-screw feeder 21 provides installation position It sets and supports, prevent double-screw feeder 21 from shaking.

Wherein, optionally, material wind mixing apparatus 2 further include material wind process between, double-spiral feeder, air amplifier and A part of setting of conveyance conduit 23 is in material wind process, and another part conveyance conduit 23 stretches out between material wind process, is located at material Outside between wind process is not limited only to this certainly.

In one embodiment of the application, it is preferable that Dry denitration system further includes conveying equipment, and conveying equipment is used for Material in storage equipment 3 is delivered to material wind process equipment；Conveying equipment includes track and cart, and track is arranged in storing Between equipment 3 and material wind process equipment, cart can slide in orbit.(not shown)

In this embodiment, specifically, between track is arranged between storing between material wind process, cart can be slided in orbit It is dynamic, the material in storing can be carried on cart, then it is artificial or using electric drive by the material wind process of cart promotion Between, then have and manually material is put into double-spiral feeder.

In one embodiment of the application, it is preferable that storage equipment 3 includes between storing, drier and bracket；Its In, drier and bracket are arranged in storing, and drier is arranged on the inner sidewall between storing, and bracket setting is being stored up On bottom face between material.(not shown)

In this embodiment, the materials such as urea can be placed on bracket and is stored, so that the ground between urea and storing Separation, plays moisture-proof effect, and drier is further ensured that the drying of inside between storing.Wherein, optionally, it is provided between storing Door that is openable or closing.

In one embodiment of the application, it is preferable that as shown in figure 4, including to 11, exhaust fan between wind to wind devices 1 12 and filter screen 13；Wherein, the setting of exhaust fan 12 is between wind 11, and the air outlet of exhaust fan 12 and shell 221 into Air port 2211 is connected；To ventilation opening is offered between wind 11, filter screen 13 is removably disposed in ventilation opening.

In this embodiment, when working to wind devices 1, the starting of exhaust fan 12 extracts air out of between wind 11, and passes through Exhaust fan 12 is converted to the air-flow of high speed, and high-speed flow is conveyed to the air inlet 2211 in shell 221 by exhaust fan 12.In exhausting It during machine 12 works, is reduced to the air between wind 11, outside air is entered by filter screen 13 between wind 11, and supply is empty Gas.Wherein, filter screen 13 plays the role of impurity screening, and exhaust fan 12 reduces noise in the interior work of exhaust fan 12.Its In, optionally, door that is openable or closing is provided between wind 11.

Shown in Figure 5, embodiments herein also provides a kind of Dry denitration technique, comprising:

Step 100, along direction from the top down through double-screw feeder 21 to the feed pipe 222 of air amplifying device 22 Transport urea conveys air to the feed pipe 222 of air amplifying device 22 to wind devices 1, and urea and air are in feed pipe 222 It is mixed to form the mixture of bellows chamber material form, and moves downwardly to conveyance conduit 23；

Step 200, mixture form uniform material wind mixture in conveyance conduit 23, then material wind mixture is delivered to In burner hearth 7, material wind mixture in burner hearth 7 nitride and sulfide react, progress denitration process.

In Dry denitration technique provided by the present application, double-screw feeder 21 is used to convey material, object to feed pipe 222 Material enters in feed pipe 222 from input end along vertical direction, while conveying to wind devices 1 to the air inlet 2211 of shell 221 Swiftly flowing air, high-speed flow are accumulated in shell 221, and then high-speed flow is by entering feed pipe to 11 clearance flows between wind 222 inside, due to venturi principle, high-speed flow is adsorbed on side wall, during high-speed flow causes during flowing through side wall The generation of heart area of low pressure, material move down under the action of negative pressure and self gravity, and in feed pipe 222 with height Fast air-flow is sufficiently mixed, and forms the form of wind wrapper, is facilitated high-speed flow and is driven material high-speed mobile, material will not sink Drop, and material will not be bonded on the tube wall of feed pipe 222, the acceleration of bellows chamber material moves downward, finally along vertical direction from out Output, is delivered in boiler using conveyance conduit 23 in material mouth, and uniform material wind mixture is formed in pipeline, guarantees spray It is uniform for entering in boiler, and since the concentration of material wind mixture is higher, transfer efficiency is high, and denitration effect is more preferable.

Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the application, rather than its limitations；To the greatest extent Pipe is described in detail the application referring to foregoing embodiments, those skilled in the art should understand that: its according to So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into Row equivalent replacement；And these are modified or replaceed, each embodiment technology of the application that it does not separate the essence of the corresponding technical solution The range of scheme.

Claims (10)

1. a kind of Dry denitration system characterized by comprising to wind devices, material wind mixing apparatus and storage equipment；

Wherein, the material wind mixing apparatus includes being sequentially connected logical double-screw feeder, air amplifying device and delivery pipe Road；

The storage equipment is for storing and providing material to the double-screw feeder；

The air amplifying device includes shell and feed pipe；The feed pipe extends along vertical direction；The case cover It is located at the outside of the feed pipe, and the shell is provided with air inlet, the air inlet is connected with described to wind devices；Institute State feed pipe and offer and give wind gap, and it is described be located in the shell to wind gap, it is described to wind gap for being given to described Air is conveyed in expects pipe；

The input end of the feed pipe is connected with the double-screw feeder, and the input end of the feed pipe is used for will be described double The material of screw feeder output is delivered to the inside of the feed pipe along vertical direction；The outlet end of the feed pipe and institute It states conveyance conduit to be connected, the outlet end of the feed pipe is used for the material wind mixture in the feed pipe along vertical direction In output to the conveyance conduit；

The conveyance conduit is for being connected to burner hearth.

2. Dry denitration system according to claim 1, which is characterized in that it is described to wind gap be along with vertical direction The inclination tuyere structure of acute angle is formed, and described is used to the feed pipe give wind diagonally downward to wind gap.

3. Dry denitration system according to claim 2, which is characterized in that the conveyance conduit include bending segment pipe with And straight line segment pipe；The bending segment pipe and the straight line segment pipe are sequentially connected logical；One end of the bending segment pipe It is connected with the air amplifying device, and the bending segment pipe is arcuate structure, the straight line segment pipe is far from described curved One end of tune pipeline is connected with the burner hearth by pipeline.

4. Dry denitration system according to claim 1, which is characterized in that the storage equipment and the material wind process Between be connected by blower with the burner hearth.

5. Dry denitration system according to claim 4, which is characterized in that the blower includes the first blower and the second wind Machine；Wherein, on first blower is arranged between the storing, and first blower is connected with the inside between the storing It is logical；On second blower is arranged between the material wind process, and it is connected between second blower and the material wind process.

6. Dry denitration system according to any one of claim 1 to 5, which is characterized in that further include detection device with And control equipment；Wherein, the detection device, the control equipment and the material wind mixing apparatus are sequentially connected and connect, described Detection device is also connected with the burner hearth.

7. Dry denitration system according to any one of claim 1 to 5, which is characterized in that the material wind mixing apparatus Further include material wind process between and mounting plate；Wherein, the mounting plate setting is in the material wind process, and the mounting plate It is provided with mounting hole；The double-screw feeder setting is in the mounting hole.

8. Dry denitration system according to any one of claim 1 to 5, which is characterized in that the storage equipment includes Between storing, drier and bracket；Wherein, the drier and the bracket are arranged in the storing, and described Drier is arranged on the inner sidewall between the storing, and the bracket is arranged on the bottom face between the storing.

9. Dry denitration system according to any one of claim 1 to 5, which is characterized in that described to include to wind devices To between wind, exhaust fan and filter screen；Wherein, the exhaust fan setting is given in wind described, and the outlet air of the exhaust fan Mouth is connected with the air inlet of the shell；It is described to ventilation opening is offered between wind, the filter screen is removably disposed in In the ventilation opening.

10. Dry denitration system according to any one of claim 1 to 5, which is characterized in that material wind mixing apparatus also wraps Include material wind process between and mounting plate；Wherein, mounting plate setting is in material wind process, and mounting plate is provided with mounting hole；It is double Screw feeder is arranged in mounting hole.